Finding the Fourth Proportional to 7,144.71, 9,859.72 and 4,162.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.71 : 9,859.72 = 4,162.59 : x
2. Step 2: Convert to fraction form
   7,144.71/9,859.72 = 4,162.59/x
3. Step 3: Cross multiply
   7,144.71x = 9,859.72 × 4,162.59
4. Step 4: Simplify right side
   7,144.71x = 41,041,971.87
5. Step 5: Solve for x
   x = 41,041,971.87/7,144.71
6. Step 6: Final answer
   x = 5,744.39